Simple Probability Help: What is the probability of drawing a flush?

[TexasTingle]

I have a few questions I am struggling to answer. My basic grasp on probability is lacking. Can anyone help explain to me how I would work through these 3 problems?


What is the probability of drawing a flush?
---- I know I need to calculate the possibilities - and I have been able to find out that the number is 1287 but I do not know how they got that number. It had something to do with using factorials, but I was not able to follow that.

What is the probability of having 12 children and having at least 1 girl?
---- (1/12)^12 --- ????

There are 13 women and 87 men - what is the probability of picking 3 and having them all be women?
----- (13/87)(12/86)(11/85) = 0.00269824048 Am I heading down the right road?

 

[stapel]

I have a few questions I am struggling to answer. My basic grasp on probability is lacking.

Are you saying that you need lesson links, so that you can learn the underlying material and then attempt the exercises?

Thank you!

 

[TexasTingle]

I have a book and material and clearly that has not helped me get to a point of understanding.

It would be helpful if someone took the examples I've given - and the suggestions I have made as to my thoughts about solving them - and help me work through them.

If that is something that can't be done here, I am happy to move along.